《扩口式管接头扩口端尺寸（英文版）》标准号是多少

“扩口式管接头扩口端尺寸（英文版）”的标准号是：GB/T 5652-2008E

GB/T 5652-2008E《扩口式管接头扩口端尺寸（英文版）》由中华人民共和国国家质量监督检验检疫总局 中国国家标准化管理委员会于2008-05-07发布，并于2008-11-01实施。

该标准的起草单位为中机生产力促进中心、海盐管件制造有限公司、伊顿（宁波）流体连接件有限公司等；起草人是李维荣、耿志学、周舜华、李俊英、陶忠明、左学俊、阮浩丰、周剑飞、王利民、冯峰。

“扩口式管接头扩口端尺寸（英文版）”介绍

The flared tube fitting, known also as the flare connection or flared-end fitting, is a type of mechanical coupling used in plumbing and hydraulic applications. The design involves expanding the end of one pipe over another to create a tight, leak-proof seal. When discussing the dimensions of the flared end in English terms, it's essential to focus on two primary attributes: the outside diameter (O.D.) of the unflared tube before expansion and the angle of the flare itself.

In standard terminology for flared connections, the size of the tube pre-flare, commonly referred to as the O.D., dictates what size of fitting can be used. This dimension must correspond closely with the inner diameter of the receiving fitting to ensure a proper fit. Manufacturers often provide detailed specifications for these sizes to guarantee compatibility between different components within the system.

The angulation or flare angle is another critical specification, as it ensures that the expanded section of the tube makes full contact with the corresponding surface inside the fitting, creating an effective seal. This angle is usually measured in degrees from the axis of the tubing and must be precise to facilitate a strong, reliable connection that resists both pressure and mechanical stress without fail.